Lloyd Ewing has been granted 10 US patents while listed as an inventor at Water Pollution Control . The first was granted in 1980 and the most recent in November 2002. Lloyd Ewing ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Lloyd Ewing in Milwaukee, WI, US.
Patents per Year Patents granted per year, 1980 to 2002 Bar chart with a peak of 4 patents in 1981. peak 4 1980: 1 patents 1980 1981: 4 patents 1981 1989: 1 patents 1989 1990: 1 patents 1990 1994: 1 patents 1994 2001: 1 patents 2001 2002: 1 patents 2002
Issued Patents All Time
Profile Widget
Showing 1–10 of 10 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
6475395 Liquid treatment process with in-plant pressure monitoring of submerged diffusers Frank L. Schmit , David T. Redmon 2002-11-05
$35,828,000
6200468 Aeration system apparatus with source of in situ cleaning agent and pressure monitoring connection for submerged diffuser Frank L. Schmit , David T. Redmon 2001-03-13
5328601 Apparatus for in place gas cleaning of diffusion elements Frank Schmidt , David T. Redmon 1994-07-12
RE33177 In place gas cleaning of diffusion elements Frank L. Schmit , David T. Redmon 1990-03-06
4889620 In place gas cleaning of diffusion elements Frank L. Schmit , David T. Redmon 1989-12-26
4288394 Sewage aeration system David T. Redmon , Paul M. Thayer , Frank L. Schmit , William H. Roche 1981-09-08
4288395 Diffusion element with boundary zone treatment David T. Redmon , William H. Roche 1981-09-08
4261932 Diffusion element with boundary zone treatment David T. Redmon , William H. Roche 1981-04-14
4261933 Diffusion element David T. Redmon 1981-04-14
4198299 Microscreen method and apparatus Michael J. Bykowski 1980-04-15